In raging weather - the most dedicated shredders are mountain ready, The 686 Serenity 1st Layer Girls Long Underwear Bottoms secure your base warmth. The first layer wearable provides a foundation for warmth, The Serenity 1st Layer Under Bottoms allow you to partake all-day outdoor activity and like it! The super-soft, brushed-back jersey, delivers cozy comfort and the bit of stretch allows you to tweak your tricks.